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Did DNA replication evolve twice independently?
Open accessAbstract
DNA replication is central to all extant cellular organisms. There are substantial functional similarities between the bacterial and the archaeal/eukaryotic replication machineries, including but not limited to defined origins, replication bidirectionality, RNA primers and leading and lagging strand synthesis. However, several core components of the bacterial replication machinery are unrelated or only distantly related to the functionally equivalent components of the archaeal/eukaryotic replication apparatus. This is in sharp contrast to the principal proteins involved in transcription and translation, which are highly conserved in all divisions of life. We performed detailed sequence comparisons of the proteins that fulfill indispensable functions in DNA replication and classified them into four main categories with respect to the conservation in bacteria and archaea/eukaryotes: (i) non-homologous, such as replicative polymerases and primases; (ii) containing homologous domains but apparently non-orthologous and conceivably independently recruited to function in replication, such as the principal replicative helicases or proofreading exonucleases; (iii) apparently orthologous but poorly conserved, such as the sliding clamp proteins or DNA ligases; (iv) orthologous and highly conserved, such as clamp-loader ATPases or 5'-->3' exonucleases (FLAP nucleases). The universal conservation of some components of the DNA replication machinery and enzymes for DNA precursor biosynthesis but not the principal DNA polymerases suggests that the last common ancestor (LCA) of all modern cellular life forms possessed DNA but did not replicate it the way extant cells do. We propose that the LCA had a genetic system that contained both RNA and DNA, with the latter being produced by reverse transcription. Consequently, the modern-type system for double-stranded DNA replication likely evolved independently in the bacterial and archaeal/eukaryotic lineages.
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“Specifically, the last common ancestor may have had a cell membrane (Jékely 2006;Koga 2011;Lombard et al. 2012;Sojo et al. 2014;Coleman et al. 2019), RNA and phosphodiester-based energy coupling (e.g.Werner and Grohmann 2011), as well as thioester-based intermediary metabolism (Goldford et al. 2017;Weiss et al. 2018), but may not have used a strictly DNA genome (Mushegian and Koonin 1996;Leipe et”
From The Emergence of Life (2019) · cites this paper as Leipe et al. 1999
In the citing paper
“The fact that the mechanisms of DNA replication in bacteria and archaea are different [133] suggests the possibility that DNA, as the primary information storage molecule, evolved independently in each of these lineages [133,134,135].”
From Opinion: The Key Steps in the Origin of Life to the Formation of the Eukaryotic Cell (2024) · cites this paper as [134]
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Takahashi, S., Matsumoto, S., Chilka, P., Ghosh, S., Okura, H., & Sugimoto, N. (2022) · Scientific Reports · doi:10.1038/s41598-022-05136-8 · Cited by 4
An Overview on Natively Unfolded Proteins
Nishikawa, K. (2009) · Seibutsu Butsuri · doi:10.2142/biophys.49.004 · Cited by 3
Two RNA Worlds: Toward the Origin of Replication, Genes, Recombination, and Repair
Lankenau, D. (2011) · Springer eBooks · doi:10.1007/978-3-642-21625-1_11 · Cited by 3
Cryo‐EM of dynamic protein complexes in eukaryotic DNA replication
Sun, J., Yuan, Z., Bai, L., & Li, H. (2016) · Protein Science · doi:10.1002/pro.3033 · Cited by 3
“Thanks to the recent advance in direct electron detection technology and image processing methods, cryo-EM is now a high resolution structural tool that is complementary to X-ray crystallography and NMR.1–3 In the cases of membrane proteins and large protein complexes, cryo-EM is particularly advantageous over other m…”
BackgroundA Model for the Evolution of Nucleotide Polymerase Directionality
Ballanco, J., & Mansfield, M. L. (2011) · PLoS ONE · doi:10.1371/journal.pone.0018881 · Cited by 4
“While this is the most we can conclude from the evidence presented here, combined with other evidence that the machinery involved in DNA polymerization evolved at least twice independently [9], the weight of evidence favors the explanation that evolutionary competition was the driving factor in determining the modern…”
BackgroundChatterjee, S., Patra, M. M., Samaddar, S., et al. (2017) · Microbiology · doi:10.1099/mic.0.000447 · Cited by 3
“Despite the similarity, the proteins involved in executing the processes do not appear to be evolutionarily related [2].”
BackgroundDid an Early Version of the Eukaryal Replisome Enable the Emergence of Chromatin?
Kaufmann, G., & Nethanel, T. (2004) · Progress in nucleic acid research and molecular biology · doi:10.1016/s0079-6603(04)77005-1 · Cited by 3
DNA translocation by the CMG helicase: the helical inchworm model
Batra, S., Allwein, B., Wang, Y. L., Hite, R. K., & Remus, D. (2026) · Biochemical Society Transactions · doi:10.1042/bst20250145 · Cited by 2
“CMG’s distinct translocation mechanism likely stems from the deep evolutionary divergence of hexameric helicases, which gave rise to structural variations that may underpin mechanistic differences [1,61].”
Yoshimura, A., & Seki, M. (2024) · Biology · doi:10.3390/biology14010003 · Cited by 1
“Thus, the equivalent replication components of the σ genome and TBP genome were no longer exchangeable, leading to a complete DNA replication divide between Bacteria and Archaea (Figure 5D(c)) [60].”
DNA Replication in Time and Space: The Archaeal Dimension
Serdyuk, A., & Allers, T. (2025) · DNA · doi:10.3390/dna5020024 · Cited by 2
“Anand [160] emphasizes the lack of progress in understanding the conversion of D-loop structures into replisomes in BIR of [148], where the 3 ′ end of the DNA strand from the previous replication cycle is used to prime and initiate the next round of replication, thus the mechanism is described as…”
DNA Replication in Archaea, the Third Domain of Life
Ishino, Y., & Ishino, S. (2013) · InTech eBooks · doi:10.5772/53986 · Cited by 2
“[155] Wilkinson A, Day J, Bowater R. Bacterial DNA ligases.”
BackgroundInfluentialBhowmik, P., & GUPTA, S. K. (2015) · PLoS ONE · doi:10.1371/journal.pone.0134762 · Cited by 2
“Replicative helicases of organisms belonging to the two other domains of life–Archaea and Eukarya are evolutionarily unrelated to DnaB (non-orthologous) and do not belong to the RecA superfamily [14, 28].”
BackgroundConsequences of EPR–Proton Qubits Populating DNA
Cooper, W. G. (2018) · Advances in quantum chemistry · doi:10.1016/bs.aiq.2017.12.001 · Cited by 2
Reconstructing the Last Universal Common Ancestor
Poole, A. M. (2021) · Advances in astrobiology and biogeophysics · doi:10.1007/978-3-030-81039-9_9 · Cited by 4
Telomeres in Evolution and Development from Biosemiotic PerspectivePreprint
Witzany, G., & Witzany, G. (2007) · Nature Precedings · doi:10.1038/npre.2007.932.2 · Cited by 4
Metadata
- Authors
- Leipe, D. D., Aravind, L., & Koonin, E. V.
- Affiliations
- National Institutes of Health (US)
- Texas A&M University (US)
- Corresponding author
- Koonin, E. V.
- Venue
- Nucleic Acids Research
- Publisher
- Oxford University Press (OUP)
- Published
- 1999-09-01
- Volume
- 27
- Issue
- 17
- Pages
- 3389-3401
- ISSN
- 0305-1048 (ISSN-L)
- 1362-4962
- PMC
- PMC148579
- OpenAlex
- W2018024025
- Semantic Scholar
- 9f9be31d2a06621cfbcaa7642db469b8cea929dc
- Cited by
- 351
- References
- 66
- Citations by year
- 2026: 6 · 2025: 5 · 2024: 16 · 2023: 5 · 2022: 5 · 2021: 11 · 2020: 10 · 2019: 6 · 2018: 12 · 2017: 13 · 2016: 15 · 2015: 13 · 2014: 18 · 2013: 12 · 2012: 5
- FWCI
- 13.34
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Nucleic Acids Research (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
- Keywords
- DNA replication, origin of replication, convergent evolution, last common ancestor, primase, replicative helicase, proofreading exonuclease, DNA ligase, RNA-DNA hybrids, reverse transcription, sequence conservation
- MeSH terms
- Animals, Bacterial Proteins, Cytoplasm, DNA Replication, Drosophila, Fungal Proteins, Models, Genetic, Sequence Homology, Nucleic Acid, Databases, Factual, Sequence Analysis, DNA, Evolution, Molecular, Archaeal Proteins
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